Active part of an electric machine, having a printed conductor

Abstract

An active part of an electric machine includes electrical conductors which are additively printed in layers, and intermediate bodies respectively disposed between the electrical conductors and being additively printed in layers, wherein the electrical conductors are printed in a radially increasing manner, alternating with the intermediate bodies. A contact layer <=300 μm of a third material is applied between at least one of the electrical conductors and at least one of the printed intermediate bodies, with a diffusion zone being embodied by the contact layer and a heat treatment.

The invention claimed is: 
     
       1. An active part of an electric machine, said active part comprising:
 electrical conductors which are additively printed in layers; 
 intermediate bodies respectively disposed between the electrical conductors and being additively printed in layers, wherein the electrical conductors are printed in a radially increasing manner, alternating with the intermediate bodies; and 
 a contact layer <=300 μm of a material different from a material of the electrical conductors and intermediate bodies, said contact layer being applied between at least one of the electrical conductors and at least one of the intermediate bodies, with a diffusion zone being embodied by the contact layer and a heat treatment. 
 
     
     
       2. The active part of  claim 1 , wherein at least one of the electrical conductors has a section with a cross-section which tapers as a height of the at least one of the electric conductors increases. 
     
     
       3. The active part of  claim 1 , wherein at least one of the electrical conductors has a plurality of sections with cross-sections that taper as a height of the at least one of the electric conductors increases. 
     
     
       4. The active part of  claim 1 , further comprising a three-dimensional structure embodied between at least one of the electrical conductors and at least one of the intermediate bodies. 
     
     
       5. The active part of  claim 4 , wherein the three-dimensional structure has a jagged pattern or an undulating pattern in a cross-section. 
     
     
       6. The active part of  claim 1 , wherein the electrical conductors have an electrical conductivity which differs as a function of a radial height of the electrical conductors. 
     
     
       7. The active part of  claim 1 , wherein the contact layer includes nickel. 
     
     
       8. A method for producing an active part of an electric machine, said method comprising:
 additively printing electrical conductors layer by layer; 
 printing intermediate bodies layer by layer between electrical conductors such that there is an alternating change between the printing of at least one electrical conductor and an intermediate body, 
 wherein the electrical conductors are printed in a radially increasing manner, alternating with the intermediate bodies, 
 wherein a difference between a first height of the layers of the electrical conductors and a second height of the layers of an adjacent one of the intermediate bodies does not exceed at most two layers during printing; and 
 applying a contact layer <=300 μm of a material different from a material of the electrical conductors and intermediate bodies between at least one of the electrical conductors and at least one of the intermediate bodies, with a diffusion zone being embodied by the contact layer and a heat treatment. 
 
     
     
       9. The method of  claim 8  wherein the difference between the first height of the layers of the electrical conductors and the second height of the layers of the adjacent one of the intermediate bodies does not exceed one layer. 
     
     
       10. The method of  claim 8  wherein a first one of the electrical conductors and a second adjacent one of the electrical conductors are initially printed with a decreasing width, and subsequently a corresponding one of the intermediate bodies is printed between the first electrical conductor and the second electrical conductor with an increasing width. 
     
     
       11. The method of  claim 8 , wherein the electrical conductors and/or the intermediate bodies are printed onto a shaft body. 
     
     
       12. The method of  claim 8 , wherein there is an alternating change between a printing of at least part of one of the electrical conductors that are a first printed subject matter and the printing of at least part of the intermediate bodies that are a second printed subject matter, in such a manner that before a change an increase in radial height of the electrical conductor or the intermediate body is produced, which is between greater than or equal to 50% and less than or equal to 200% of a following increase in height of a respectively other one of the printed subject matters. 
     
     
       13. The method of  claim 8 , further comprising heat treating the active part. 
     
     
       14. The method of  claim 8 , for producing an active part comprising electrical conductors which are additively printed in layers, intermediate bodies respectively disposed between the electrical conductors and being additively printed in layers, wherein the electrical conductors are printed in a radially increasing manner, alternating with the intermediate bodies, and a contact layer <=300 μm of a material different from a material of the electrical conductors and intermediate bodies, with the contact layer being applied between at least one of the electrical conductors and at least one of the printed intermediate bodies, with a diffusion zone being embodied by the contact layer and a heat treatment. 
     
     
       15. The method of  claim 14 , wherein at least one of the electrical conductors has a section with a cross-section which tapers as a height of the at least one of the electric conductors increases. 
     
     
       16. The method of  claim 14 , wherein at least one of the electrical conductors has a plurality of sections with cross-sections that taper as a height of the at least one of the electric conductors increases. 
     
     
       17. The method of  claim 14 , further comprising forming a three-dimensional structure between at least one of the electrical conductors and at least one of the intermediate bodies. 
     
     
       18. The method of  claim 17 , wherein the three-dimensional structure has a jagged pattern or an undulating pattern in a cross-section. 
     
     
       19. The method of  claim 14 , wherein the electrical conductors have an electrical conductivity which differs as a function of a radial height of the electrical conductors. 
     
     
       20. The method of  claim 14 , wherein the contact layer includes nickel.